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      04-14-2021, 10:49 AM   #2574
dogbone
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Drives: '09 E90 M3 - IB
Join Date: Feb 2012
Location: 93 million miles from the Sun

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2009 BMW E92 M3  [0.00]
2009 BMW E90 M3  [0.00]
Quote:
Originally Posted by admranger View Post
Your story reminds me of when I bought a "good" 2.8 motor to put in my E36M3 race car to move it to J-prepared. Had valve cover leaks on my first test day so packed it in. Installed a new valve cover gasket and felt ready to race at Phoenix. Towed down there and the same thing at the track. Put on a new/used valve cover and same thing. Packed up and towed home. Sent engine off for rebuild. It was a hot mess inside with improper ring gaps (never disclosed by seller) and a sump full of aluminum shavings. Fortunately, I was going up to the next size pistons so the block was saved. Thought about chucking it all after the problems but fortunately wiser folks talked me out of it.

I can definitely relate to your frustrations. Glad it worked out.
Yeah that sounded brutal.

I'm going to be faced with a dilemma----I'm rebuilding the E90 engine. Not making it crazy, but it will be a refreshed engine. The question is do I do the swap again and put it back in the E90? Or do I leave the E92 motor in there for now?

Aside from the E92 engine holding revs longer than I want (which is something I plan on investigating), it's running perfectly. I feel like I haven't gotten any bang-for-my-buck from having gone through this whole first swap. To swap it so quickly feels like a lot of wasted time and money.....
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